Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 228 [Rate centres in NPA 228] [Dial plan for NPA 228]

NXX: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
228-600 A Tanner-Williams MS MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480      
228-600 0 Tanner-Williams MS   624H ONVOY SPECTRUM, LLC 480   2021-12-16   
228-600 1 Tanner-Williams MS   624H ONVOY SPECTRUM, LLC 480   2021-12-16   
228-600 2 Tanner-Williams MS   624H ONVOY SPECTRUM, LLC 480   2021-12-16   
228-600 3 Tanner-Williams MS   624H ONVOY SPECTRUM, LLC 480   2021-12-16   
228-600 4 Tanner-Williams MS   624H ONVOY SPECTRUM, LLC 480   2021-12-16   
228-600 5 Tanner-Williams MS   5562 METROPCS, INC. 480   2021-12-17   
228-600 6 Tanner-Williams MS   624H ONVOY SPECTRUM, LLC 480   2022-07-29   
228-600 8 Tanner-Williams MS   719E ONVOY, LLC - MS 480   2021-12-17   
228-600 9 Tanner-Williams MS   719E ONVOY, LLC - MS 480   2021-12-17   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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